function findBulkEffDate(ITEM_021, ITEM_004, JSON_ITEM_LIST) {
    // 成对商品的成本生效日期/零售生效日期需一致
    var I021 = null;
    var I004 = null;
    var flag = false;
    for (var j = 0; j < JSON_ITEM_LIST.length; j++) {
        if (JSON_ITEM_LIST[j].ITEM_NBR == ITEM_021 && I021 ==null) {
            I021 = JSON_ITEM_LIST[j];
        }else if (JSON_ITEM_LIST[j].ITEM_NBR == ITEM_004 && I004 ==null){
            I004 = JSON_ITEM_LIST[j];
        }
    }
    if (I021.NEW_COST_EFF_DATE !== I004.NEW_COST_EFF_DATE
        || I021.NEW_COST_EXP_DATE !== I004.NEW_COST_EXP_DATE){
        flag = true;
    }
    if (I021.NEW_RETAIL_EFF_DATE !== I004.NEW_RETAIL_EFF_DATE
        || I021.NEW_RETAIL_EXP_DATE !== I004.NEW_RETAIL_EXP_DATE){
        flag = true;
    }
    return flag;
}
